I would think it would but you need to do the exercises and cut down on the activity causing the pain. This is not an instant relief pain. When you put it on it feels good but it isn’t until a few hours later that you realize the pain has subsided when you weren’t aware of it. 

Not sure

I am not sure. I should think it might since it numbs. I only ever used it on my back though, so I cannot say positively. 

Trigger finger happens when tendons in the finger or thumb become inflamed. Tendons are tough bands of tissue that connect muscles and bones. Together, the tendons and muscles in the hands and arms bend and straighten the fingers and thumbs.
As our Arnica Cream reduces inflammation, promote circulation, and help reduce pain, apply it to the muscles and tendons in the hand and forearm. Refer to our Stretching Guide and application image for carpet tunnel, as the treatment is similar. Wishing you the best.